Well-boring apparatus



H. R. DECKER.

WELL BORING APPARATUS.

APPLICATION FILED MAY 21, 1915.

Patented Oct. 19,1920;

viii,

l/V VE N TOR .a per Un t ESTATE HARRY-RI. DECKER, or Irons Ton, TEXAS.

WELL- onnie "appeal-mus.

Application filed May 21,

To all whom it may concern.

Be it known that HARRY R. DECKER, a citizen of the United States, residin at Houston, in the county of Harris and tate of Texas, have invented certain new and useful Improvements in Nell-Boring Apparatus, of which the following is a specification.

This invention relates to new and useful improvements in well boring apparatus.

The object of the invention is to provide an apparatus of the character described embodying a rotary table and a novel means for connecting the same to the string of pipe, which extends down into the well and which is rotated by said table and in turn rotates the boring tool carried by the lower end. of said string of pipe.

Said means of connecting the rotary table with the string includes a special form of V grief pipe; said grief pipe however, isso formed, that it may be operatively connected with the rotary table through the ordinary grip rings, now in use upon rotaries employed for rotating strings of pipe formed of the ordinary round pipe sections. The term grief pipe as used throughout this specification and claims. refers to the section of the drill stem which is in operative connection with the rotary and whlch directly sustains the. strain imparted fromthe rotary to the string of pipe. This term is in common use in connection with rotary drilling. Inasmuch as it is often desirable to drive the string alternately by means of the ordinary grip rings, and the grief pipe, by reason of the varying forms of strata. which must be piercech the form of grief pipe hereinafter described is specially adaptable, inasmuch as, when used, the rotary employed may be utilized for driving the string through the grip rings with any form of pipe or with the herein described snecial form of grief pipe.

Vith the above objects in view, the invention has particular relation to certain novel features of construction.v operation and arrangement of parts, an example of which is given in this specification and illustrated in the accompanying drawings, whereini Figure 1, shows a plan view of a rotary, showing the grief pipe, as driven by grip rin s, and

Fig. 2. shows a vertical sectional view of the grief pipe.

Referring now more particularly to the Specification of Letters Patent.

Patented ot.19,1920. 1915. Seria1No.29,475.

drawings, wherein like numerals of reference designate similar parts in each of the figures, the numeral 1, refers to the frame work of therotary, which has the base plate 2, whereon is mounted the rotary table 3. These parts are of any approved construction, and it' is not thought necessary to specify their construction or the operation of the rotary in detail.

The preferred form of grief pipe is formed of an I beam,.as 4:, which is inserted through a pipe section 5, which is swaged thereon, so as to conform to the'cross sectional contour thereof, as shown in Figs. 1 and 2, and at the opposite ends, as at 6, 6, the webs of the I beam, are notched, and the corresponding ends of the section 5, are swaged into'said notches, so as to secure said members together. The foregoing construction results in a reinforced pipe sec-,

tion, whose ends are reduced to allow for the diameter ofthe connecting collars 7, and having a pair of longitudinal grooves on opposite sides, in which the driving means carried by the rotary table, may engage to drive the pipe. The grooves also afford passageways for the return of the water which is forced down through the pipe to V carry away the cuttings, from the boring tool, and between the webs of the I beam 4, within the grief pipe, are the water passageways 8, 8, permitting the passage of water down through the grief pipe and into the string of pipe attached to the lower end thereof.

The ordinary grip rings 15, 15, may be used to rotate the grief pipe described, said grip rings being seated in the corresponding grooves of the grief pipe, as shown in Fig. 1, and rotating the same by direct pressure against the sides of said grooves, as illustrated, rather than by the engaging of the sharp cornersof the grip rings against the pipe. Dull grip rings mayjthus be as efi'ectivelv used. as sharp ones.

What I claim is;

1. A grief pipe formed of a tubular mem ber and a reinforcing beam extending therethrough, to which said member is secured.

2. A grief pipe formed of a tubular memher, a reinforcing beam extending therethrough, the corresponding ends of said member and tube being swaged together.

3. A grief pipe formed of a tubular member having a plurality of opposing external longitudinal grooves, extending approximately from end to end thereof, and a rein- In testimony whereof I have signed my forcing beam extending therethrough, to name to this specification in the presence of 10 whielisaid fmembefr iS'SGOIlIfGd. two snb'scri-bing'witnesses.

4. ie ipe ormed 0 an I eam an 1 a tubul i' m mber through which said I HARRY. DECKER beam passes, said tubular member being 1 messes iswaged around the I beam, so as to conform J. A. WATSON, to the external contour thereof. F. A. LIDDELL. 

